87041399 has 2 divisors, whose sum is σ = 87041400. Its totient is φ = 87041398.

The previous prime is 87041389. The next prime is 87041419. The reversal of 87041399 is 99314078.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87041399 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87041359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43520699 + 43520700.

It is an arithmetic number, because the mean of its divisors is an integer number (43520700).

Almost surely, 2^87041399 is an apocalyptic number.

87041399 is a deficient number, since it is larger than the sum of its proper divisors (1).

87041399 is an equidigital number, since it uses as much as digits as its factorization.

87041399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 87041399 is about 9329.5980084889. The cubic root of 87041399 is about 443.1750349093.

It can be divided in two parts, 8 and 7041399, that added together give a palindrome (7041407).

The spelling of 87041399 in words is "eighty-seven million, forty-one thousand, three hundred ninety-nine".